20. A 1.0M solution of a compound with 2 ionizable groups (pka's = 6.2 and 9.5: 100 mLtotal) has a pH of 6.8. If a biochemist adds 60 mL of 1.0 M HCl to this solution, thesolution will change to pH:A) 5.60.B) 8.90.c) 9.13.D) 9.32.E) The pH cannot be determined from this information.

Answered: 20. A 1.0 M solution of a compound with…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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20. A 1.0M solution of a compound with 2 ionizable groups (pka's = 6.2 and 9.5: 100 mL
total) has a pH of 6.8. If a biochemist adds 60 mL of 1.0 M HCl to this solution, the
solution will change to pH:
A) 5.60.
B) 8.90.
c) 9.13.
D) 9.32.
E) The pH cannot be determined from this information.

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Step 1

$20 . 100 mL of 1.0 M solution of a compound with 2 ionizable groups has a pH of 6.8 . {pK}_{a, 1} = 6.2 and {pK}_{a, 2} = 9.5 We have to find out the change in pH after adding 60 mL of 1.0 M HCl to this solution .$

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